Some links for a burgeoning student I know:
James Stacey’s tutorial – part 1 and part 2.
SteveG, the OG god of macro, documented his setup here, in case money is no object.
Anyone have an iPhone app that they like that automates macro focus stacking?
Here’s a SteveG, from his Credor writeup:

More recently, on the TGN podcast, James recommended the free Adobe app ‘Project Indigo’ for wrist shots. It doesn’t do focus stacking but I’m gonna try it out. Their writeup says that they plan to add stacking as a feature and show this example of manually stacking 41 images:













